JP3004654B2 - Nickel-chromium-molybdenum alloy and method of using the same - Google Patents
Nickel-chromium-molybdenum alloy and method of using the sameInfo
- Publication number
- JP3004654B2 JP3004654B2 JP1050936A JP5093689A JP3004654B2 JP 3004654 B2 JP3004654 B2 JP 3004654B2 JP 1050936 A JP1050936 A JP 1050936A JP 5093689 A JP5093689 A JP 5093689A JP 3004654 B2 JP3004654 B2 JP 3004654B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- alloy
- structural member
- corrosion
- producing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、次のような部材の製造に使用するNi−Cr
−Mo合金に関する。すなわち上記部材とは、たとえば燃
焼炉ガス脱硫装置、あるいは硫酸の濃縮装置のように、
現今の化学工業および環境保全技術において支配的であ
るような非常に強い腐食条件の下で、全面腐食並びに孔
食およびすきま腐食に対して非常に良好な耐食性を示さ
なくてはならないものであり、また、熱間および冷間加
工で経済的にかつ問題なく製造できなければならないも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to Ni-Cr used for manufacturing the following members.
-Mo alloy. That is, the above-mentioned member is, for example, a combustion furnace gas desulfurization device or a sulfuric acid concentration device,
Must exhibit very good corrosion resistance against general and pitting and crevice corrosion under very strong corrosion conditions as dominant in modern chemical industry and environmental protection technology; In addition, it must be able to be manufactured economically and without problems by hot and cold working.
この発明は、たとえば燃焼炉ガス脱硫装置、あるいは
硫酸の濃縮装置におけるように、今日の化学工業および
環境保全技術において支配的であるような非常に強い腐
食条件の下で、全面腐食並びに孔食およびすきま腐食に
対して非常に良好な耐食性を示すと共に、熱間および冷
間加工で経済的かつ問題なく製造できる部材の製造に対
して、22.0〜24.0重量％のクロム、15.0〜16.5重量％の
モリブデン、0.3重量％以下のタングステン、1.5重量％
以下の鉄、0.4重量％以下のバナジウム、0.1〜0.4重量
％のアルミニウム、0.001〜0.04重量％のマグネシウ
ム、0.001〜0.01重量％のカルシウムを含み、残余はニ
ッケル及びごく微量の不純物から成る合金およびその使
用法を提案するものである。The present invention relates to general corrosion and pitting and corrosion under very strong corrosion conditions which are dominant in today's chemical industry and environmental protection technology, such as in a combustion furnace gas desulfurizer or a sulfuric acid concentrator. 22.0 to 24.0% by weight of chromium, 15.0 to 16.5% by weight of molybdenum for the production of components which show very good corrosion resistance against crevice corrosion and can be produced economically and without problems by hot and cold working 0.3% by weight or less of tungsten, 1.5% by weight
Alloys containing the following iron, up to 0.4% by weight of vanadium, 0.1 to 0.4% by weight of aluminum, 0.001 to 0.04% by weight of magnesium, 0.001 to 0.01% by weight of calcium, with the balance being nickel and trace impurities, and Suggests usage.
西独公告公報第1 210 566号又はそれと対応する米国
特許第3 203 792号およびフランス特許第15 36 741号に
よると、主要な合金成分としてニッケル、クロムおよび
モリブデンを含む次の耐食合金が知られている。According to West German Publication No. 1 210 566 or the corresponding U.S. Pat.No. 3,203,792 and French Patent 1,536,741, the following corrosion-resistant alloys containing nickel, chromium and molybdenum as major alloying components are known: I have.
西独公告公報第1 210 566号 この種の合金は、若し脱酸剤としてより広い反応成分
を含有する場合は、満足に加工処理されないことが同様
に知られている。例えば雑誌、“金属学（Metallkund
e）"53巻（1962）、289頁には、このような合金が0.16
〜0.71重量％のアルミニウム又は0.09〜0.11重量％のマ
グネシウムを含む場合に、満足に鍛造され得たと報告し
ているが、上記文献と出所を同じくする西独公告公報第
1 210 566号又は、それと対応する米国特許第3 203 792
号の所論によれば、アルカリ土金属、すなわちマグネシ
ウム又はカルシウムの添加は適当とされるべきである
が、脱酸剤としてのアルミニウムは非常に不利であると
いうことを論じている。West German Official Gazette No. 1 210 566 It is also known that alloys of this type do not work satisfactorily if they contain a broader reactant as a deoxidizer. For example, a magazine, “Metallkund
e) "Vol. 53 (1962), p. 289 states that 0.16
It has been reported that forgings can be satisfactorily forged when the aluminum alloy contains 0.07 to 0.11% by weight of aluminum or 0.09 to 0.11% by weight of magnesium.
No. 1 210 566 or corresponding US Pat.
The article argues that the addition of alkaline earth metals, ie magnesium or calcium, should be appropriate, but aluminum as a deoxidizer is very disadvantageous.
ところで次の事実が、驚くべきことに明らかとなっ
た。すなわち脱酸剤としてのアルミニウム、マグネシウ
ムおよびカルシウムが、 0.1〜0.4重量％のアルミニウム 0.001〜0.04重量％のマグネシウム 0.001〜0.01重量％のカルシウム の組合せで使用されると、熱間加工性は最善となり、割
れが全く生じない。By the way, the following fact has become surprisingly clear. That is, when aluminum, magnesium and calcium as deoxidizers are used in a combination of 0.1-0.4% by weight of aluminum 0.001-0.04% by weight of magnesium 0.001-0.01% by weight of calcium, the hot workability becomes the best, No cracks occur.
ここでエレクトロスラグ精錬の場合には、マグネシウ
ムおよびカルシウムの下限はより僅かな量にまでも低減
させることができる。しかしながら３成分全ては、同時
に存在しなければならない。例えば米国特許第4 129 46
4号の所論によれば、これらの３成分は決して自由に選
択できるか、又は置換できる成分ではない。Here, in the case of electroslag refining, the lower limits of magnesium and calcium can be reduced to even smaller amounts. However, all three components must be present at the same time. For example, U.S. Pat.
According to the argument of No. 4, these three components are by no means freely selectable or replaceable components.
非常に腐食的な種々の媒質下での使用に対しては、さ
らに西独公開公報第31 25 301号から次の成分の合金が
知られている。For use in various media which are very corrosive, alloys of the following components are further known from German Offenlegungsschrift 31 25 301:
20〜24重量％ クロム、 12〜17重量％ モリブデン、 ２〜４重量％ タングステン、 0.5重量％未満 ニオブ、 0.5重量％未満 タンタル、 0.1重量％未満 炭素、 0.2重量％未満 珪素、 0.5重量％未満 マンガン、 ２〜８重量％ 鉄、 0.7重量％未満 アルミニウムとチタン、 0.5重量％未満 バナジウム この公知の合金は、公知になった時点および、当時の
合金流通市場に出現した時点では、腐食に対する抵抗性
の最もよい組合せであることを示した。20-24 wt% chromium, 12-17 wt% molybdenum, 2-4 wt% tungsten, less than 0.5 wt% niobium, less than 0.5 wt% tantalum, less than 0.1 wt% carbon, less than 0.2 wt% silicon, less than 0.5 wt% manganese 2-8% by weight Iron, less than 0.7% by weight Aluminum and titanium, less than 0.5% by weight Vanadium This known alloy, when it became known and appeared in the alloy distribution market at the time, was resistant to corrosion. The best combination was shown.
しかしながら今日の化学工業および環境保全技術の課
題のための試験によると、この合金は全ての要求を満足
させるものでないことが分かった。例えば環境保全につ
いての不断に増大する要求の下では、公海における廃棄
硫酸、いわゆる稀硫酸の投棄は最早あり得ないだろう。
したがってこの投棄硫酸は、平均的濃度を有する高温の
汚れた硫酸に対して特に高い抵抗を持った材料を必要と
する硫酸と改められねばならない。また他の面では、従
来の公知の合金が、最早確信をもって満足に働かないよ
うな攻撃的条件が存在し得ることが、燃焼炉ガスの脱硫
が増えるにつれて最近明らかになって来ている。However, tests for today's chemical industry and environmental technology challenges have shown that this alloy does not meet all requirements. For example, under ever-increasing demands for environmental protection, the dumping of waste sulfuric acid, so-called dilute sulfuric acid, in the high seas will no longer be possible.
This waste sulfuric acid must therefore be replaced by sulfuric acid which requires a material which has a particularly high resistance to hot, dirty sulfuric acids having an average concentration. On the other hand, it has recently become evident with the increasing desulfurization of combustion furnace gases that there may be aggressive conditions in which the known alloys of the prior art no longer work satisfactorily and satisfactorily.
それはとりわけ入れ替りの少ない洗浄水が循環する循
環路の場合であって、そこでは塩素イオン濃度が特に大
きくなる。しかしながら環境保全のために化石燃料を使
う発電施設の運転では、燃焼炉ガス脱硫装置の機能を優
先して考えるから、従来技術で公知であるものよりも高
い耐食性を持つ材料が手に入らねばならない。This is especially the case for circuits in which wash water is circulated with little change, in which the chloride ion concentration is particularly high. However, in the operation of power generation facilities using fossil fuels for environmental protection, materials with higher corrosion resistance than those known in the prior art must be obtained because the function of the combustion furnace gas desulfurization unit is given priority. .
その他の例としては、バイオテクノロジーにおける現
今の材料への要請が挙げられる。そこでは塩酸が、人間
および動物の体と調和する唯一の無機酸として特別な役
割を演ずる。Another example is the demand for modern materials in biotechnology. There, hydrochloric acid plays a special role as the only inorganic acid in harmony with the human and animal body.
かくして稀塩酸に対して特に高い安定性を持つ材料
が、新たに要請される。Thus, there is a new need for materials with particularly high stability to dilute hydrochloric acid.
このようにして、現今の化学工業および環境保全技術
の新しい使用条件に対応するため、1980年（西独公開公
報第31 25 301号の優先年）の従来技術で公知の合金よ
りも腐食特性につき明らかに新しい要求をより良く満足
させかつ経済的に製作加工できる合金の供給が解決すべ
き課題となる。In this way, in order to meet the new conditions of use of the current chemical industry and environmental protection technology, the corrosion properties are more pronounced than those of the alloys known from the prior art of 1980 (priority date of German Published Patent Application No. 3125 301). The problem to be solved is to supply alloys that can satisfy new requirements better and can be manufactured and processed economically.
ところで驚くべきことに、若し次の成分を持つニッケ
ル・クロム・モリブデン合金が使用されると、上記課題
が達成されることが判明した。By the way, it has been surprisingly found that the above-mentioned problem is achieved if a nickel-chromium-molybdenum alloy having the following components is used.
22.0〜24.0重量％のクロム、 15.0〜16.5重量％のモリブデン、 0.3重量％以下のタングステン、 1.5重量％以下の鉄、 0.3重量％以下のコバルト、 0.1重量％以下の珪素、 0.5重量％以下のマンガン、 0.015重量％以下の炭素、 0.4重量％以下のバナジウム、 0.1〜0.4重量％のアルミニウム、 0.001〜0.04重量％のマグネシウム、 0.001〜0.01重量％のカルシウム、 残余はニッケル及びごく微量の不純物 この場合、クロム、モリブデン、アルミニウム、マグ
ネシウム、カルシウム及びニッケルはこの合金の必須成
分であるが、タングステン、鉄、コバルト、珪素、マン
ガン、炭素及びバナジウムはこの合金の必須成分ではな
く止むを得ない場合には含有することを許容されるオプ
ション成分である。そして、これらのオプション成分の
うちのタングステン、鉄、珪素、マンガン及びバナジウ
ムの上限値は、この合金の構造的安定性を改善するため
に、低く設定されている。さらに、この合金の感受性を
低減させるために、許容し得る炭素含有量は、0.015重
量％までと非常に低く設定されている。22.0-24.0 wt% chromium, 15.0-16.5 wt% molybdenum, 0.3 wt% or less tungsten, 1.5 wt% or less iron, 0.3 wt% or less cobalt, 0.1 wt% or less silicon, 0.5 wt% or less manganese , 0.015 wt% or less of carbon, 0.4 wt% or less of vanadium, 0.1-0.4 wt% of aluminum, 0.001-0.04 wt% of magnesium, 0.001-0.01 wt% of calcium, the balance is nickel and trace impurities Chromium, molybdenum, aluminum, magnesium, calcium and nickel are essential components of this alloy, but tungsten, iron, cobalt, silicon, manganese, carbon and vanadium are not essential components of this alloy and should be included if unavoidable It is an optional component that is allowed to do so. The upper limits of tungsten, iron, silicon, manganese, and vanadium among these optional components are set low in order to improve the structural stability of the alloy. Furthermore, to reduce the sensitivity of this alloy, the acceptable carbon content has been set very low, up to 0.015% by weight.
末尾に添付の第１表〜第７表に取纏めた試験結果のよ
うに、この合金は全ての試験条件下で西独公開公報第31
25 301号の従来の技術に対応する合金よりも優れた耐
食性を示している。As shown in the test results summarized in Tables 1 to 7 attached at the end, this alloy can be obtained under all test conditions under German Patent Publication No.
It shows better corrosion resistance than the alloy corresponding to the conventional technology of 25301.
試験結果はこの発明の合金についての実施例１〜４か
ら成る。また化学成分は第１表に記載されている。なお
第１表には、西独公開公報第31 25 301号の従来の技術
に対応する比較例５および６の化学成分も同時に示され
ているが、この表で、加工性を考えて規定する脱酸剤成
分すなわち、アルミニウム、マグネシウムおよびカルシ
ウムは本発明で提案されたものである。The test results consisted of examples 1 to 4 for the alloy according to the invention. The chemical components are listed in Table 1. Table 1 also shows the chemical components of Comparative Examples 5 and 6 corresponding to the prior art of West German Patent Publication No. 3125301. The acid agent components, ie, aluminum, magnesium and calcium, are those proposed in the present invention.
稀硫酸濃縮の課題に対する試験溶液として、ASTM Ｇ
−28、Ｂ法による23重量％のH2SO4、1.2重量％のHCl、
１重量％のFeCl3および１重量％のCuCl2を含む沸騰水溶
液が用いられる。第２表から明らかなごとく、この発明
の合金は旧い従来の技術に対応する合金よりも僅かに30
％ほど高い腐食度を示しているが、若し従来の合金につ
いて特別の値（第２表の比較例６）ではなく、“材料と
腐食（Werkstoffe und Korrosin）"37巻（1986）、137
〜145頁に記載の0.17mm/年の報告値が用いられるなら、
この発明の合金は従来の合金よりも59％ほど高くなる。ASTM G is a test solution for the task of dilute sulfuric acid concentration.
-28, 23% by weight H 2 SO 4 according to method B, 1.2 wt% of HCl,
A boiling aqueous solution containing 1% by weight of FeCl 3 and 1% by weight of CuCl 2 is used. As is evident from Table 2, the alloy of the present invention is only 30 times less than the alloy corresponding to the old prior art.
%, But not a special value for the conventional alloy (Comparative Example 6 in Table 2), but “Materials and Corrosion (Werkstoffe und Korrosin)”, Vol. 37 (1986), 137
If the reported value of 0.17 mm / year described on page 145 is used,
The alloy of the present invention is about 59% higher than the conventional alloy.
この種の条件下の臨界孔食温度で局部腐食に対する耐
食性の測定にしばしば使用されるさらに薄い塩素イオン
含有の硫酸溶液内で、この発明の合金は第３表に示すご
とく従来の合金と本質的に同じであることを示してい
る。In thinner sulfuric acid solutions containing chloride ions, which are often used to measure the corrosion resistance to localized corrosion at critical pitting temperatures under such conditions, the alloys of the present invention essentially differ from the conventional alloys as shown in Table 3. Are the same.
従来の技術について試験された臨界孔食温度は、“材
料と腐食（Werkstoffe und Korrosin）"37巻（1986）、
137〜145頁の報告と一致する。ここでこの発明の合金
は、実施例３および４の測定結果が示すように僅かに優
れた傾向を示すにすぎない。Critical pitting temperatures tested for conventional techniques are described in "Materials and Corrosion (Werkstoffe und Korrosin)", Volume 37 (1986),
This is consistent with the report on pages 137-145. Here, the alloy of the present invention shows only a slightly superior tendency as shown by the measurement results of Examples 3 and 4.
第３表で、従来の技術と本発明とについて挙げられた
局部腐食に対する耐食性についての同一値は、試験条件
がより高い温度における測定を許さないから公知の10重
量％FeCl3・6H2O溶液内でもそれ故に同一である。それ
故に両方の場合に“＞”の不等号を用いなければならな
いのである。これに反して第４表は、温度85℃の同一溶
液内におけるすきま腐食に対する感受性を考えると、従
来の技術に対するこの発明の合金の明らかな優越性を示
している。なおこれは、PTFEの普通の割れ分類基準で測
定されたものである（“材料と腐食（Werkstoffe und
（Korrosion）"37巻（1986）、185頁参照）。In Table 3, the same values for corrosion resistance to localized corrosion listed for the prior art and the present invention are for the known 10 wt% FeCl 3 .6H 2 O solution since the test conditions do not allow measurement at higher temperatures. Within the same. Therefore, in both cases the ">" inequality must be used. In contrast, Table 4 shows the clear superiority of the alloy of the invention over the prior art, given its susceptibility to crevice corrosion in the same solution at a temperature of 85 ° C. This is measured according to the standard PTFE crack classification standard (“Materials and Corrosion (Werkstoffe und
(Korrosion), 37 (1986), p. 185).
燃焼炉ガス脱硫の場合に生じる必要性を考えると、第
４表に記載されたような局部腐食に対するこの発明に係
る合金の高い耐食性はより重要である。これによって例
えば特に攻撃的な処理条件を備える予洗浄において、発
生する局部腐食のために従来の合金が最早使用できなく
ても、この発明の合金は使用することができる。Given the need that arises in the case of combustion furnace gas desulfurization, the high corrosion resistance of the alloy according to the invention against localized corrosion as described in Table 4 is more important. This allows the alloys of the invention to be used even if the conventional alloys can no longer be used, for example in pre-cleaning with particularly aggressive processing conditions, due to localized corrosion occurring.
第５表はそれを超えて、燃焼炉ガス脱硫の典型的媒質
内の直線的な腐食度を示している。ここでもとりわけ高
温（105℃）の際のしかも高い塩化物成分を含む稀釈さ
れた２％硫酸溶液の場合に、この発明の合金ははるかに
より良好な適合性を有することを明確にする。そこでは
平均の腐食度が従来技術の合金の場合よりもほぼ93％ほ
ど少ないのである。Beyond that, Table 5 shows the linear corrosion rates in typical media of combustion furnace gas desulfurization. Here too, it is clear that the alloy according to the invention has a much better compatibility, especially at elevated temperatures (105 ° C.) and in the case of diluted 2% sulfuric acid solutions with a high chloride content. There, the average degree of corrosion is almost 93% less than with the prior art alloy.
従来技術に較べた場合のこの発明に係る合金のより高
い耐食性は、第６表に示されている。この表によれば、
この発明の合金は、この還元性の酸内で従来技術の比較
例よりも約60％ほど良好な結果を得ている。そして若し
他の個所（“材料と腐食（Werkstoffe und Korrosin）"
37巻（1986）、137〜145頁）に記載された従来技術につ
いての0.28mm/年の腐食度が比較の基礎にされるなら、
約25％の重要な改善がその場合にも相変わらず得られ
る。第６表はさらに重要な還元性の酸としての塩化物の
ない10％のH2SO4内での耐食性についての報告を同時に
行っている。そこでは上記腐食度が、従来技術に対して
約64％ほど低下している。また若し西独公開公報第31 2
5 301号に記載された従来技術についての0.36mm/年の腐
食度が比較の基礎にされるなら、上記腐食度は相変わら
ず50％ほどに低下する。The higher corrosion resistance of the alloy according to the invention compared to the prior art is shown in Table 6. According to this table,
The alloys of the present invention achieve about 60% better results in this reducing acid than the prior art comparative examples. And elsewhere (“Materials and corrosion (Werkstoffe und Korrosin)”)
If the corrosion rate of 0.28 mm / year for the prior art described in Vol. 37 (1986), pp. 137-145) is the basis for comparison,
A significant improvement of about 25% is still obtained in that case. Table 6 are carried out simultaneously a report on the further corrosion resistance in 10% H within 2 SO 4 without chloride as an important reduction of the acid. There the corrosion rate is reduced by about 64% over the prior art. Also, West German Patent Publication No. 31 2
If the corrosion rate of 0.36 mm / year for the prior art described in 5 301 is used as a basis for comparison, the corrosion rate will still drop to around 50%.
強い酸化性のために標準の試験溶液として大事なASTM
Ｇ−28、Ａ法の試験溶液のような酸化性の溶液内で従
来技術を明らかに、すなわち40％ほど従来技術を上廻る
耐食性が、表７に示すようにこの発明に係る合金につい
て観察されることは驚くべきことである。上記の場合、
勿論、平均で0.91mm/年を持つ従来技術に対して西独公
開公報第31 25 301号に挙げられた0.74mm/年よりも高い
腐食度が測定されている。しかしながら、たとえ従来技
術に関してこれより少ない値が基礎にとられても、この
発明の合金について従来技術に対する26％の重要な改善
が相変わらず生じる。ASTM is important as a standard test solution for strong oxidizing properties
The prior art was revealed in an oxidizing solution such as the test solution of G-28, Method A, that is, corrosion resistance exceeding the prior art by about 40% was observed for the alloy according to the present invention as shown in Table 7. That is surprising. In the above case,
Of course, corrosion rates higher than 0.74 mm / year listed in West German Patent Publication No. 3125301 have been measured for the prior art having an average of 0.91 mm / year. However, a significant improvement of 26% over the prior art for the alloy according to the invention still occurs for the alloy according to the invention, even if lower values are taken for the prior art.
それ故にこの発明に係る合金の従来技術を凌駕する特
性は、西独公開公報第31 25 301号の所論によればその
従来技術の合金は常に少なくとも２％のタングステンと
鉄とが含有されなければならず、またMo/WおよびFe/Wの
一定比が守らなければならないところから、特に注目さ
れるところである。しかしながらタングステンは、若し
他の成分で一定の目的を達し得ない場合は、合金成分と
して添加されるに過ぎない。ここでモリブデンとタング
ステンの相互置換が不可能であること、２成分が指示さ
れた限度で必要であること、および３から５のMo/W比が
守られねばならないことが、公知の合金の場合には明確
に言えることである。このような従来技術の背景の下
で、再生スクラップを使用するという経済的生産によっ
てタングステンを不可避な量だけ含有する合金を上述の
応用分野における使用のために選びだすこと、およびそ
のような量は合金の加工性を損なわないであろうという
ことは自明ではなかった。Therefore, the properties of the alloy according to the invention that surpass the prior art are that, according to the statement of German Offenlegungsschrift 31 25 301, the prior art alloy must always contain at least 2% of tungsten and iron. This is of particular interest because of the constant ratio of Mo / W and Fe / W that must be observed. However, tungsten is only added as an alloying component if other components cannot achieve a certain purpose. In the case of known alloys, it is not possible here to substitute molybdenum and tungsten, that two components are required with the indicated limits, and that a Mo / W ratio of 3 to 5 must be maintained. What is clear can be said. Under such background of the prior art, the economical production of reclaimed scrap selects alloys containing an unavoidable amount of tungsten for use in the above-mentioned applications, and such amounts are It was not obvious that the workability of the alloy would not be impaired.
本発明による合金は、特に請求項９〜17に挙げられた
条件の下で使用される。より広い使用可能性は、第２表
〜第７表に記載された耐食性を基に当業者によって考え
られるであろう。なお、これらの第２表〜第７表の試験
条件の欄中の「％」はいずれも「重量％」を意味してい
る。The alloy according to the invention is used in particular under the conditions specified in claims 9-17. Wider applicability will be considered by those skilled in the art based on the corrosion resistances set forth in Tables 2-7. In Table 2 to Table 7, "%" in the column of test conditions means "% by weight".
───────────────────────────────────────────────────── フロントページの続き (72)発明者 マンフレート・ベー・ロックエル ドイツ連邦共和国6382フリートリッヒシ ュドルフ３・ダーリーンベーク 11 (72)発明者 エルンスト・バリス ドイツ連邦共和国6236エシュボルン・ベ ルリーネル シュトラーセ ８ (56)参考文献 特開 昭62−158844（ＪＰ，Ａ) 特開 昭62−158845（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C22C 19/05 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Manfred Böcklüll 6382 Friedrichsdorf 3 Dahleinbeek 11 (72) Inventor Ernst Baris 6236 Eschborn Berliner Strasse 8 Germany (56) References JP-A-62-158844 (JP, A) JP-A-62-158845 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C22C 19/05
Claims (18)
量％のモリブデン、0.1〜0.4重量％のアルミニウム、0.
001〜0.04重量％のマグネシウム及び0.001〜0.01重量％
のカルシウムを含み、 残部としてのニッケル及び不可避的不純物をさらに含む
ニッケル・クロム・モリブデン合金。1. The composition according to claim 1, wherein 22.0 to 24.0% by weight of chromium, 15.1 to 16.5% by weight of molybdenum, 0.1 to 0.4% by weight of aluminum,
001-0.04% by weight magnesium and 0.001-0.01% by weight
Nickel-chromium-molybdenum alloy further containing nickel and unavoidable impurities.
む請求項１に記載の合金。2. The alloy according to claim 1, further comprising up to 0.3% by weight of tungsten.
または２に記載の合金。3. The composition of claim 1, further comprising up to 1.5% by weight of iron.
Or the alloy of 2.
求項１、２または３に記載の合金。4. The alloy as claimed in claim 1, further comprising up to 0.3% by weight of cobalt.
１〜４のいずれか１つに記載の合金。5. The alloy as claimed in claim 1, further comprising up to 0.1% by weight of silicon.
求項１〜５のいずれか１つに記載の合金。6. The alloy as claimed in claim 1, further comprising up to 0.5% by weight of manganese.
項１〜６のいずれか１つに記載の合金。7. The alloy according to claim 1, further comprising up to 0.015% by weight of carbon.
請求項１〜７のいずれか１つに記載の合金。8. The alloy according to claim 1, further comprising up to 0.4% by weight of vanadium.
非常に過酷な腐食条件の下で全面腐食並びに孔食及びす
きま腐食に対して抵抗性のある熱間または冷間加工され
た構造部材の製造に用いる請求項１〜８のいずれか１つ
に記載の合金の使用方法。9. Manufacture of hot or cold worked structural components resistant to general and pitting and crevice corrosion under the very harsh corrosion conditions of the present chemical industry and environmental protection technology. A method for using the alloy according to any one of claims 1 to 8, wherein the alloy is used for:
脱硫装置における構造部材の製造に用いる請求項１〜８
のいずれか１つに記載の合金の使用方法。10. A method for producing a structural member in a combustion furnace gas desulfurization apparatus for increasing the concentration of sulfuric acid.
Use of the alloy according to any one of the above.
オン濃度を有する60重量％硫酸内で平均約0.27mm/年の
腐食度を示す構造部材の製造に用いる請求項１〜８のい
ずれか１つに記載の合金の使用方法。11. The method according to claim 1, which is used for producing a structural member exhibiting an average corrosion rate of about 0.27 mm / year in 60% by weight sulfuric acid having a chloride ion concentration of 15 g / at an operating temperature of 80 ° C. Use of an alloy according to any one of the preceding claims.
る２重量％の硫酸内で平均約0.004mm/年の腐食度を示す
構造部材の製造に用いる請求項１〜８のいずれか１つに
記載の合金の使用方法。12. The method according to claim 1, which is used for producing a structural member having an average corrosion rate of about 0.004 mm / year in 2% by weight sulfuric acid having a chloride ion concentration of 70 g / 105 ° C. The use of the alloy described in 1.
重量％のFeCl3及び１重量％のCuCl2の沸騰溶液内で平均
約0.07mm/年の腐食度を示す構造部材の製造に用いる請
求項１〜８のいずれか１つに記載の合金の使用方法。13. The method according to claim 1, wherein 23% by weight of H 2 SO 4 , 1.2% by weight of HCl,
Use of an alloy according to any one of claims 1 to 8 for use in the manufacture of weight% of FeCl 3 and 1 wt% of CuCl 2 in a boiling solution within an average of about 0.07 mm / year structural member showing the corrosion rate of Method.
量％のFeCl3及び１重量％のCuCl2からなる溶液内で24時
間の試験期間に少なくとも120℃の臨界孔食温度を示す
構造部材の製造に用いる請求項１〜８のいずれか１つに
記載の合金の使用方法。14. A critical pore of at least 120 ° C. for a test period of 24 hours in a solution consisting of 7% by weight of H 2 SO 4 , 3% by weight of HCl, 1% by weight of FeCl 3 and 1% by weight of CuCl 2. A method for using the alloy according to any one of claims 1 to 8, which is used for manufacturing a structural member exhibiting an erosion temperature.
間の試験期間に85℃以上の臨界孔食温度を示す構造部材
の製造に用いる請求項１〜８のいずれか１つに記載の合
金の使用方法。15. The method according to claim 1, which is used for producing a structural member having a critical pitting temperature of 85 ° C. or more in a solution of 10% by weight of FeCl 3 .6H 2 O for a test period of 72 hours. The use of the alloy described in (1).
21mm/年の腐食度を示す構造部材の製造に用いる請求項
１〜８のいずれか１つに記載の合金の使用方法。16. An average of about 0.1 in a boiling solution of 1.5% by weight of HCl.
Use of the alloy according to any one of claims 1 to 8 for producing a structural member having a corrosion rate of 21 mm / year.
0.15mm/年の腐食度を示す構造部材の製造に用いる請求
項１〜８のいずれか１つに記載の合金の使用方法。17. An average of about 10% by weight in a boiling solution of H 2 SO 4.
Use of the alloy according to any one of claims 1 to 8 for producing a structural member having a corrosion rate of 0.15 mm / year.
O4）３を含む沸騰水溶液内（いわゆる、ASTM Ｇ−28、
Ａ法によるコーターテスト）で平均約0.55mm/年の腐食
度を示す構造部材の製造に用いる請求項１〜８のいずれ
か１つに記載の合金の使用方法。18. H 2 SO 4 at 50% by weight and Fe 2 (S
O 4 ) In a boiling aqueous solution containing 3 (so-called ASTM G-28,
A method for using the alloy according to any one of claims 1 to 8, which is used for producing a structural member exhibiting an average corrosion rate of about 0.55 mm / year in a coater test according to the A method.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3806799.4 | 1988-03-03 | ||
| DE3806799A DE3806799A1 (en) | 1988-03-03 | 1988-03-03 | NICKEL CHROME MOLYBDENUM ALLOY |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01272737A JPH01272737A (en) | 1989-10-31 |
| JP3004654B2 true JP3004654B2 (en) | 2000-01-31 |
Family
ID=6348657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1050936A Expired - Lifetime JP3004654B2 (en) | 1988-03-03 | 1989-03-02 | Nickel-chromium-molybdenum alloy and method of using the same |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4906437A (en) |
| EP (1) | EP0334410B1 (en) |
| JP (1) | JP3004654B2 (en) |
| KR (1) | KR0122078B1 (en) |
| AT (1) | ATE76109T1 (en) |
| AU (1) | AU616244B2 (en) |
| BR (1) | BR8900968A (en) |
| CA (1) | CA1327716C (en) |
| DE (2) | DE3806799A1 (en) |
| ES (1) | ES2032099T3 (en) |
| FI (1) | FI98531C (en) |
| ZA (1) | ZA891644B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7998571B2 (en) | 2004-07-09 | 2011-08-16 | James Hardie Technology Limited | Composite cement article incorporating a powder coating and methods of making same |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0790534A (en) * | 1993-07-19 | 1995-04-04 | Mitsubishi Materials Corp | Corrosion resisting member for sulfuric acid dew point corrosion |
| US5529642A (en) * | 1993-09-20 | 1996-06-25 | Mitsubishi Materials Corporation | Nickel-based alloy with chromium, molybdenum and tantalum |
| SE513552C2 (en) * | 1994-05-18 | 2000-10-02 | Sandvik Ab | Use of a Cr-Ni-Mo alloy with good workability and structural stability as a component in waste incineration plants |
| US6280540B1 (en) | 1994-07-22 | 2001-08-28 | Haynes International, Inc. | Copper-containing Ni-Cr-Mo alloys |
| EP0974679A3 (en) * | 1998-07-24 | 2001-07-11 | Inco Alloys International, Inc. | Ductile nickel-iron-chromium alloy |
| US6579388B2 (en) | 2001-06-28 | 2003-06-17 | Haynes International, Inc. | Aging treatment for Ni-Cr-Mo alloys |
| US6544362B2 (en) | 2001-06-28 | 2003-04-08 | Haynes International, Inc. | Two step aging treatment for Ni-Cr-Mo alloys |
| US6860948B1 (en) | 2003-09-05 | 2005-03-01 | Haynes International, Inc. | Age-hardenable, corrosion resistant Ni—Cr—Mo alloys |
| KR100495928B1 (en) * | 2002-04-12 | 2005-06-16 | 소용호 | heating tube for gas scrubber |
| US20060093509A1 (en) * | 2004-11-03 | 2006-05-04 | Paul Crook | Ni-Cr-Mo alloy having improved corrosion resistance |
| US7785532B2 (en) * | 2006-08-09 | 2010-08-31 | Haynes International, Inc. | Hybrid corrosion-resistant nickel alloys |
| US8557391B2 (en) | 2011-02-24 | 2013-10-15 | Guardian Industries Corp. | Coated article including low-emissivity coating, insulating glass unit including coated article, and/or methods of making the same |
| US8679633B2 (en) | 2011-03-03 | 2014-03-25 | Guardian Industries Corp. | Barrier layers comprising NI-inclusive alloys and/or other metallic alloys, double barrier layers, coated articles including double barrier layers, and methods of making the same |
| US8679634B2 (en) | 2011-03-03 | 2014-03-25 | Guardian Industries Corp. | Functional layers comprising Ni-inclusive ternary alloys and methods of making the same |
| US8790783B2 (en) | 2011-03-03 | 2014-07-29 | Guardian Industries Corp. | Barrier layers comprising Ni and/or Ti, coated articles including barrier layers, and methods of making the same |
| US8709604B2 (en) | 2011-03-03 | 2014-04-29 | Guardian Industries Corp. | Barrier layers comprising Ni-inclusive ternary alloys, coated articles including barrier layers, and methods of making the same |
| US9970091B2 (en) | 2015-07-08 | 2018-05-15 | Haynes International, Inc. | Method for producing two-phase Ni—Cr—Mo alloys |
| RU2672647C1 (en) * | 2017-08-01 | 2018-11-16 | Акционерное общество "Чепецкий механический завод" | Corrosive-resistant alloy |
| US10577679B1 (en) | 2018-12-04 | 2020-03-03 | General Electric Company | Gamma prime strengthened nickel superalloy for additive manufacturing |
| CN112522541B (en) * | 2019-09-17 | 2022-03-18 | 东北大学 | Nickel-based alloy desulfurizing agent and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3650734A (en) * | 1969-06-16 | 1972-03-21 | Cyclops Corp | Wrought welding alloys |
| US4129464A (en) * | 1977-08-24 | 1978-12-12 | Cabot Corporation | High yield strength Ni-Cr-Mo alloys and methods of producing the same |
| US4533414A (en) * | 1980-07-10 | 1985-08-06 | Cabot Corporation | Corrosion-resistance nickel alloy |
| JPS57134546A (en) * | 1981-02-13 | 1982-08-19 | Sumitomo Metal Ind Ltd | Corrosion resistant alloy |
| US4626408A (en) * | 1984-09-20 | 1986-12-02 | Nippon Yakin Kogyo Kabushiki Kaisha | Ni-based alloy excellent in intergranular corrosion resistance, stress corrosion cracking resistance and hot workability |
| JPH0674471B2 (en) * | 1986-01-07 | 1994-09-21 | 住友金属工業株式会社 | High corrosion resistance Ni-based alloy |
| JPH0674472B2 (en) * | 1986-01-07 | 1994-09-21 | 住友金属工業株式会社 | High-strength Ni-based alloy with excellent corrosion resistance |
-
1988
- 1988-03-03 DE DE3806799A patent/DE3806799A1/en not_active Withdrawn
-
1989
- 1989-02-21 US US07/313,622 patent/US4906437A/en not_active Expired - Lifetime
- 1989-02-22 DE DE8989200444T patent/DE58901363D1/en not_active Expired - Lifetime
- 1989-02-22 ES ES198989200444T patent/ES2032099T3/en not_active Expired - Lifetime
- 1989-02-22 AT AT89200444T patent/ATE76109T1/en not_active IP Right Cessation
- 1989-02-22 EP EP89200444A patent/EP0334410B1/en not_active Expired - Lifetime
- 1989-03-01 CA CA000592500A patent/CA1327716C/en not_active Expired - Lifetime
- 1989-03-01 FI FI890971A patent/FI98531C/en not_active IP Right Cessation
- 1989-03-02 JP JP1050936A patent/JP3004654B2/en not_active Expired - Lifetime
- 1989-03-02 KR KR1019890002636A patent/KR0122078B1/en not_active IP Right Cessation
- 1989-03-02 AU AU30865/89A patent/AU616244B2/en not_active Expired
- 1989-03-02 BR BR898900968A patent/BR8900968A/en not_active IP Right Cessation
- 1989-03-03 ZA ZA891644A patent/ZA891644B/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7998571B2 (en) | 2004-07-09 | 2011-08-16 | James Hardie Technology Limited | Composite cement article incorporating a powder coating and methods of making same |
Also Published As
| Publication number | Publication date |
|---|---|
| US4906437A (en) | 1990-03-06 |
| EP0334410A1 (en) | 1989-09-27 |
| FI98531B (en) | 1997-03-27 |
| FI98531C (en) | 1997-07-10 |
| AU616244B2 (en) | 1991-10-24 |
| DE58901363D1 (en) | 1992-06-17 |
| JPH01272737A (en) | 1989-10-31 |
| ATE76109T1 (en) | 1992-05-15 |
| EP0334410B1 (en) | 1992-05-13 |
| DE3806799A1 (en) | 1989-09-14 |
| ES2032099T3 (en) | 1993-01-01 |
| ZA891644B (en) | 1990-11-28 |
| KR890014767A (en) | 1989-10-25 |
| FI890971A0 (en) | 1989-03-01 |
| AU3086589A (en) | 1989-09-07 |
| FI890971A (en) | 1989-09-04 |
| BR8900968A (en) | 1989-10-24 |
| KR0122078B1 (en) | 1997-12-04 |
| CA1327716C (en) | 1994-03-15 |
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